build: semi-automated release process

.github/workflows/release.yml

@@ -0,0 +1,99 @@
+name: Release
+
+on:
+  push:
+    tags: ["v*.*.*"]
+
+# see https://docs.github.com/en/actions/tutorials/authenticate-with-github_token#modifying-the-permissions-for-the-github_token
+permissions: {}
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - name: Checkout Code
+        # see https://github.com/actions/checkout
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
+      - name: Set up Ruby
+        # see https://github.com/ruby/setup-ruby
+        uses: ruby/setup-ruby@9eb537ca036ebaed86729dcb9309076e4c5c3b74 # v1.314.0
+        with:
+          ruby-version: '3.3.9'
+          bundler-cache: false
+      - name: Install Dependencies
+        run: bundle install
+      - name: Run the default task
+        run: bundle exec rake
+
+  rubygems_release:
+    name: RubyGems Release
+    if: github.repository == 'CycloneDX/cyclonedx-ruby-gem'
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    needs: test
+    permissions:
+      contents: write # Required for `rake release` to perform git synchronization.
+      id-token: write # Required for Trusted Publishing authentication.
+    environment: release
+    steps:
+      - name: Checkout Code
+        # see https://github.com/actions/checkout
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
+      - name: Set up Ruby
+        # see https://github.com/ruby/setup-ruby
+        uses: ruby/setup-ruby@9eb537ca036ebaed86729dcb9309076e4c5c3b74 # v1.314.0
+        with:
+          ruby-version: '3.4' # Stable environment to package the gem for the supported ruby versions
+          bundler-cache: false
+      - name: Push gem to RubyGems
+        # see https://github.com/rubygems/release-gem
+        uses: rubygems/release-gem@6317d8d1f7e28c24d28f6eff169ea854948bd9f7 # v1.2.0
+      - name: Upload gem artifact
+        # see https://github.com/actions/upload-artifact
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a #v7.0.1
+        with:
+          name: gem
+          path: pkg/*.gem
+          retention-days: 1
+
+  github_release:
+    name: GitHub Release
+    if: github.repository == 'CycloneDX/cyclonedx-ruby-gem'
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    needs: rubygems_release
+    environment: release
+    # Needed for `gh release create` because GitHub Releases require write access
+    # to repository contents, which is not granted by default with GITHUB_TOKEN.
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout Code
+        # see https://github.com/actions/checkout
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          persist-credentials: false
+      - name: Download gem artifact
+        # see https://github.com/actions/download-artifact
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          name: gem
+          path: pkg
+      - name: Create GitHub Release
+        run: |
+          declare -a FLAGS=("--verify-tag" "--generate-notes")
+
+          # Determine release type from tag suffix
+          if [[ "$GITHUB_REF_NAME" =~ -(alpha|beta|rc|pre)[0-9.]*$ ]]; then
+            FLAGS+=("--prerelease")
+          fi
+
+          # Publish the release on GitHub with auto-generated release notes
+          gh release create "${FLAGS[@]}" -- "$GITHUB_REF_NAME" pkg/*.gem
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

CHANGELOG.md

@@ -20,6 +20,9 @@ Please file a bug if you notice a violation of semantic versioning.
 
 ### Added
 
+- Semi-automated CI release workflow triggered by version tags (`vMAJOR.MINOR.PATCH` with optional pre-release suffixes) (#46)
+- RubyGems publishing via `rubygems_release` using trusted publishing
+- Automated GitHub Releases with generated release notes, including support for pre-releases
 - `CONTRIBUTING.md` file to help people find their way to contributing
 - `CHANGELOG.md` file to document notable changes in keep-a-changelog format
 - `Cyclonedx::BomHelpers` module to house helper methods, replacing global methods

CONTRIBUTING.md

@@ -88,36 +88,20 @@ Made with [contributors-img][🖐contrib-rocks].
 
 ### To release a new version:
 
-#### Automated process
-
-Coming Soon!
-
-#### Manual process
-
-1. Run `bin/setup && bin/rake` as a "test, coverage, & linting" sanity check
-2. Update the version number in `version.rb`, and ensure `CHANGELOG.md` reflects changes
-3. Run `bin/setup && bin/rake` again as a secondary check, and to update `Gemfile.lock`
-4. Run `git commit -am "🔖 Prepare release v<VERSION>"` to commit the changes
-5. Run `git push` to trigger the final CI pipeline before release, and merge PRs
+#### Semi-automated process
+
+1. Update the version number in `version.rb`, and ensure `CHANGELOG.md` reflects the changes.
+2. Commit the changes:
+   ```sh
+   git commit -am "🔖 Prepare release v<VERSION>"
+   ```
+3. Push the changes to trigger the final CI pipeline before the release.
     - NOTE: Remember to [check the build][🧪build].
-6. Run `export GIT_TRUNK_BRANCH_NAME="$(git remote show origin | grep 'HEAD branch' | cut -d ' ' -f5)" && echo $GIT_TRUNK_BRANCH_NAME`
-7. Run `git checkout $GIT_TRUNK_BRANCH_NAME`
-8. Run `git pull origin $GIT_TRUNK_BRANCH_NAME` to ensure latest trunk code
-9. Optional for older Bundler (< 2.7.0): Set `SOURCE_DATE_EPOCH` so `rake build` and `rake release` use the same timestamp and generate the same checksums
-    - If your Bundler is >= 2.7.0, you can skip this; builds are reproducible by default.
-    - Run `export SOURCE_DATE_EPOCH=$EPOCHSECONDS && echo $SOURCE_DATE_EPOCH`
-    - If the echo above has no output, then it didn't work.
-    - Note: `zsh/datetime` module is needed, if running `zsh`.
-    - In older versions of `bash` you can use `date +%s` instead, i.e. `export SOURCE_DATE_EPOCH=$(date +%s) && echo $SOURCE_DATE_EPOCH`
-10. Run `bundle exec rake build`
-11. Run `bundle exec rake release` which will create a git tag for the version,
-    push git commits and tags, and push the `.gem` file to the gem host configured in the gemspec.
-12. Run `bin/gem_checksums` (more context [1][🔒️rubygems-checksums-pr], [2][🔒️rubygems-guides-pr])
-    to create SHA-256 and SHA-512 checksums. This functionality is provided by the `stone_checksums`
-    [gem][💎stone_checksums].
-    - The script automatically commits but does not push the checksums
-13. Sanity check the SHA256, comparing with the output from the `bin/gem_checksums` command:
-    - `sha256sum pkg/<gem name>-<version>.gem`
+4. Create a git tag for the gem version. Prefix the tag with 'v'. For example, if the current [gem version](https://github.com/CycloneDX/cyclonedx-ruby-gem/blob/master/lib/cyclonedx/ruby/version.rb) is 1.2.0, the tag should be 'v1.2.0'. Pre-releases are supported. See the [release workflow](https://github.com/CycloneDX/cyclonedx-ruby-gem/blob/master/.github/workflows/release.yml) for more details. Push the tag to the repository to trigger the release workflow.
+
+> [!WARNING]
+> The gem version and git tag MUST match. A mismatch may cause `rake release` (invoked by `rubygems/release-gem`) to create and push a tag for the gem version, which could produce unexpected results.
+5. Monitor the release workflow and verify that the release completes succesfully.
 
 [📜src-gh]: https://github.com/CycloneDX/cyclonedx-ruby-gem
 [🧪build]: https://github.com/CycloneDX/cyclonedx-ruby-gem/actions